Explain how input and output data format of the hadoop framework?
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What is the port number for NameNode
What is Safemode in Apache Hadoop?
What will you do when NameNode is down?
What do you understand from Node redundancy and is it exist in hadoop cluster?
On what basis Namenode will decide which datanode to write on?
How to change replication factor of files already stored in HDFS?
how to share the metastore within multiple users?
Name some companies that use Hadoop?
Is hadoop required for data science?
what is the default replication factor in HDFS?
What is Apache Hadoop YARN?
What are the different methods to run Spark over Apache Hadoop?
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